# Validate > Slash-only Phase 5 stub — stress-test each derivation chain for weak links. - Skill: `chrisdavidson/validate-2` (Agent Skill) - Install (CLI): `npx skillmds@latest add chrisdavidson/validate-2` - Raw SKILL.md: https://api.skillmd.com/api/skills/chrisdavidson/validate-2/raw - Safety review: pending - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Coding & Dev Tools - License: MIT - Author: chrisdavidson (https://skillmd.com/u/chrisdavidson) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/chrisdavidson/validate-2 --- # Focused Validate Mode You are running in focused-validate mode. Execute the procedure below, produce its canonical output sections, then run the focused-mode validation step below — do not run the full 5-phase first-principles analysis. Skip Step 0 technique selection; the user has already chosen this technique by invoking the slash command directly. ## When to reach for this Use this phase once the Derivation Chains artifact from Phase 4 is complete — all conclusions have chains and the core question is answered. Completing a derivation chain does not guarantee the chain is sound. A chain built on an unverified assumption that is load-bearing, or one whose weakest link is never examined, produces a conclusion that looks rigorous but collapses under scrutiny. Validation is the adversarial pass that exists to find the flaws forward-direction reasoning was not looking for. --- ## Procedure Stress-test the analysis. For each conclusion, trace the derivation chain back to its named ground truths and check that every link holds. Identify the weakest link in each chain — the step where the reasoning is most dependent on an assumption that is not fully verified, or where the inferential gap is largest. Check whether any unverified assumption (`GT-N?`) is load-bearing for a high-stakes conclusion; if it is, either verify it now or apply a confidence caveat to the conclusion. Apply the Validation Rubric as a systematic check — that document defines the criteria, levels, and scoring. Do not re-author the rubric criteria here; apply them. **Named artifact:** Signed-off analysis — the complete output document with all sections present, all conclusions traced to named ground truths, and all weak links either resolved or explicitly flagged with confidence caveats. **Exit criterion:** Every conclusion traces to a named ground truth via a complete derivation chain, AND every weak link is either resolved (the assumption has been verified or reclassified) or explicitly flagged with a confidence caveat that a reader can evaluate. A skeptic inspecting the signed-off analysis can verify both conditions hold without asking the analyst for clarification. ## Focused-mode validation **Check the output against its own completion condition before presenting it.** The procedure above states one, in whichever form this technique uses — an exit criterion, a stop test, or an output contract. Read that condition again and confirm the output actually produced meets every requirement it names, not just the ones that were easiest to satisfy. **This is a scope-proportionate check, not the six-criterion Self-Audit Gate.** That gate scores a six-section analysis document; this run produced one technique's output sections, not six, so walking all six criteria against it would score structure that was never produced. The larger of the two components: a focused run does not acquire evidence — it opens no cited source — so a claim resting on a source this run did not open stays marked rather than being resolved as confirmed. **Carry the mark forward.** Anything this run could not verify is carried into the output marked with a `?` rather than dropped or silently asserted as fact. **Revise once, then stop.** If the check fails, revise the output and check it again. Revise at most one time. If it still fails after that pass, present the output with the gap named rather than revising again. **End every run with a validation line, without exception.** State exactly one of the following, verbatim, never silently: - `Focused-mode validation: satisfied` - `Focused-mode validation: revised once, now satisfied` - `Focused-mode validation: not satisfied - ` Close with the reason this line is unconditional: a silent run is indistinguishable from a run that skipped the check. --- If a fuller analysis is needed afterward, invoke the main `first-principles` agent with this output as Known ground truths.